Finding the Fourth Proportional to 1,880.56, 2,818.32 and 1,058.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,880.56 : 2,818.32 = 1,058.50 : x
2. Step 2: Convert to fraction form
   1,880.56/2,818.32 = 1,058.50/x
3. Step 3: Cross multiply
   1,880.56x = 2,818.32 × 1,058.50
4. Step 4: Simplify right side
   1,880.56x = 2,983,191.72
5. Step 5: Solve for x
   x = 2,983,191.72/1,880.56
6. Step 6: Final answer
   x = 1,586.33